12. THE CALCULUS PAGE PROBLEMS LIST by D. A. Kouba [Univ. of Calif. at Davis] The problems in the categories "precise epsilon/delta definition", "continuity of a function", "Squeeze Principle", and "limit definition of the derivative" contain some problems (all with solutions) that are sufficiently sophisticated for an intermediate level undergraduate real analysis course.

17. Timothy Gowers "Mathematical discussions contents page". [Topics under "Analysis" include: "A dialogue concerning the existence of the square root of two"; "The meaning of continuity"; "How to solve basic analysis exercises without thinking"; Proving that continuous functions on the closed interval [0,1] are bounded"; "Finding the basic idea of a proof of the fundamental theorem of algebra"; "What is the point of the mean value theorem?"; "A tiny remark about the Cauchy-Schwarz inequal!
ity"]

1. Dave Rusin's The Mathematical Atlas 26: Real functions and Dave Rusin's The Mathematical Atlas 28: Measure and integration. See especially "Selected topics at this site" at the bottom of each of these web pages.

5. WEB PAGES FOR PH.D. QUALIFYING EXAMS (See the latest version, which at present is dated June 23, 2000.) [Virtually all of these contain a number of tests (often with solutions) in graduate level real analysis.]

10. IB Higher Level Mathematics: Option 12. Analysis and Approximation [A useful list of many topics that arise in a honors calculus course or a in lower level real analysis course, with links to web pages for more about the topics.]

6. Some remarks about the use of the intermediate value property of continuous functions on intervals for solving inequalities and 8 URL's for worked calculus curve sketching examples. [See the May 6, 2001 post by Dave L. Renfro.]

8. Two definitions of an asymptote -- (i) a line the graph approaches at infinity; (ii) a line that both the graph and the slope of the graph approaches at infinity. [See the Sept. 21, 2000 post by Dave L. Renfro.]

17. Discussion about and web page references to continuity matters--especially of the ruler function. A proof is given that the ruler function is continuous at each irrational point and discontinuous at each rational point.